cmake_minimum_required(VERSION 3.16)
# 指定编译平台/架构与语言标准, 推荐指定Ninja为构建工具,可以加快编译速度(相比make)
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR arm)
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
# 指定工具链
set(CMAKE_C_COMPILER_FORCED TRUE) # skip compiler test
set(CMAKE_CXX_COMPILER_FORCED TRUE)
set(CMAKE_C_COMPILER arm-none-eabi-gcc)
set(CMAKE_CXX_COMPILER arm-none-eabi-g++)
set(CMAKE_ASM_COMPILER arm-none-eabi-g++)
set(CMAKE_OBJCOPY arm-none-eabi-objcopy)
set(CMAKE_OBJDUMP arm-none-eabi-objdump)
set(SIZE arm-none-eabi-size) 
set(CMAKE_AR arm-none-eabi-ar)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_C_STANDARD 11)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

# project settings
project(ToolheadTriple C CXX ASM)

#Uncomment for hardware floating point
add_compile_definitions(ARM_MATH_CM4;ARM_MATH_MATRIX_CHECK;ARM_MATH_ROUNDING;)
add_compile_options(-mfloat-abi=hard -mfpu=fpv4-sp-d16)
add_link_options(-mfloat-abi=hard -mfpu=fpv4-sp-d16 -lc -lstdc++)

#Uncomment for software floating point
#add_compile_options(-mfloat-abi=soft)

# add_compile_options(-mcpu=cortex-m4 -mthumb -mthumb-interwork)
add_compile_options(-mcpu=cortex-m4 -mthumb)
add_compile_options(-ffunction-sections -fdata-sections -fno-common -fmessage-length=0)

# uncomment to mitigate c++17 absolute addresses warnings
#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-register")

# Enable assembler files preprocessing
add_compile_options($<$<COMPILE_LANGUAGE:ASM>:-x$<SEMICOLON>assembler-with-cpp>)

if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")
    message(STATUS "Maximum optimization for speed")
    add_compile_options(-Ofast)
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "RelWithDebInfo")
    message(STATUS "Maximum optimization for speed, debug info included")
    add_compile_options(-Ofast -g)
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "MinSizeRel")
    message(STATUS "Maximum optimization for size")
    add_compile_options(-Os)
else ()
    message(STATUS "Minimal optimization, debug info included")
    add_compile_options(-Og -g)
endif ()

include_directories(
Core/Inc 
Drivers/STM32F4xx_HAL_Driver/Inc 
Drivers/STM32F4xx_HAL_Driver/Inc/Legacy 
Drivers/CMSIS/Device/ST/STM32F4xx/Include 
Drivers/CMSIS/Include
Middlewares/Third_Party/FreeRTOS/Source/portable/GCC/ARM_CM4F 
Middlewares/Third_Party/FreeRTOS/Source/CMSIS_RTOS_V2 
Middlewares/Third_Party/FreeRTOS/Source/include
Utils/Inc
Common/error 
Common/protocol_sstp
Bsp/bsp_can
Bsp/bsp_led 
Bsp/bsp_utils 
Modules/module_base
Modules/can_channel
Modules/can_host
Apps
)

add_definitions(-DDEBUG -DUSE_HAL_DRIVER -DSTM32F407xx)

# file(GLOB_RECURSE SOURCES "Core/*.*" "Drivers/*.*" "Middlewares/*.*" "Modules/*.*" "Apps/*.*" "Utils/*.*")
# .s在Core/Startup下以此种方式参与编译
file(GLOB_RECURSE SOURCES 
"Core/*.*" "Drivers/*.*" "Middlewares/*.*" 
"Common/error/*.*" 
"Common/protocol_sstp/*.*" 
"Bsp/bsp_can/*.*" 
"Bsp/bsp_led/*.*"
"Bsp/bsp_utils/*.*" 
"Modules/module_base/*.*"
"Modules/can_channel/*.*"
"Modules/can_host/*.*"
"Apps/wrapper.cpp" 
)

set(LINKER_SCRIPT ${CMAKE_SOURCE_DIR}/ToolheadTriple/STM32F407VETx_FLASH.ld)
add_link_options(-Wl,-gc-sections,--print-memory-usage,-Map=${PROJECT_BINARY_DIR}/${PROJECT_NAME}.map)
add_link_options(-mcpu=cortex-m4 -mthumb -mthumb-interwork)
add_link_options(-T ${LINKER_SCRIPT})

add_executable(${PROJECT_NAME}.elf ${SOURCES} ${LINKER_SCRIPT})

set(HEX_FILE ${PROJECT_BINARY_DIR}/${PROJECT_NAME}.hex)
set(BIN_FILE ${PROJECT_BINARY_DIR}/${PROJECT_NAME}.bin)

set(DCMAKE_EXPORT_COMPILE_COMMANDS=1)

add_custom_command(TARGET ${PROJECT_NAME}.elf POST_BUILD
        COMMAND ${CMAKE_OBJCOPY} -Oihex $<TARGET_FILE:${PROJECT_NAME}.elf> ${HEX_FILE}
        COMMAND ${CMAKE_OBJCOPY} -Obinary $<TARGET_FILE:${PROJECT_NAME}.elf> ${BIN_FILE}
        COMMENT "Building ${HEX_FILE}
Building ${BIN_FILE}")

